Lines banging on disengagement

by Chris Gasaway
(Port Orchard,Wa.)

In disengagement,the lines rattle and start off slow and speed up and suddenly stop,anywhere from 10-45 seconds. No deterioration of performance. The circuit board and contacts have been replaced. It is a Rheem classic 1 year old 2 ton w/heat strips and outdoor sensor,thermostat has also been changed.